<template>
	<view>
		<view class="search-box">
			<uni-search-bar @input="input" clearButton="none" radius="100"></uni-search-bar>
		</view>
		
		<!-- 搜索结果列表 -->
		<view class="sugg-list" v-if="searchResultList.length !== 0">
			<view class="sugg-item" v-for="(item,i) in searchResultList" :key="i" @click="gotoDetail(item)">
				<view class="goods-name">{{item.goods_name}}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		
		<!-- 搜索历史 -->
		<view class="history-box" v-else>
			<!-- 标题区域 -->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="16" @click="clearHistory()"></uni-icons>
			</view>
			<!-- 列表区域 -->
			<view class="history-list">
				<uni-tag :text="item" v-for="(item,i) in histories" :key="i" @click="gotoGoodsList(item)"></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				// 设置定时器
				timer:0,
				// 设置关键字
				kw:'',
				// 搜索建议列表
				searchResultList:[],
				// 搜索历史列表数据
				historyList:[]
			};
		},
		onLoad(){
			this.historyList = JSON.parse(uni.getStorageSync('kw')||'[]')
		},
		methods:{
			input(e){
				clearTimeout(this.timer)
				this.timer = setTimeout(()=>{
					this.kw = e.value
					this.getSearchResultList()
				}, 500);
			},
			async getSearchResultList(){
				if(this.kw === ''){
					this.searchResultList = []
					return
				}
				const {data:res} = await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
				if(res.meta.status !== 200) return uni.$showMsg()
				this.searchResultList = res.message
				this.saveSearchHistory()
			},
			gotoDetail(item){
				// console.log(item.goods_id)
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
				})
			},
			saveSearchHistory(){
				// this.historyList.push(this.kw)
				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				this.historyList= Array.from(set)
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			// 清除搜索历史
			clearHistory(){
				this.historyList = []
				uni.setStorageSync('kw','[]')
			},
			gotoGoodsList(kw){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?query=' + kw
				})
			}
		},
		computed:{
			histories(){
				return [...this.historyList].reverse()
			},
		
		}
	}
</script>

<style lang="scss">
.search-box{
	position: sticky;
	top: 0;
	z-index: 999;
}
.sugg-list{
	padding: 0 5px;
	.sugg-item{
		display: flex;
		align-items: center;
		justify-content: space-between;
		padding: 14px 0;
		border-bottom: 1px solid #efefef;
		font-size: 12px;
		.goods-name{
			white-space: nowrap;
			overflow: hidden;
			text-overflow: ellipsis;
			margin-right: 3px;
		}
	}
}
.history-box{
	padding:0 5px;
	.history-title{
		display: flex;
		align-items: center;
		justify-content: space-between;
		font-size: 13px;
		border-bottom: 1px solid #efefef;
		height: 40px;
	}
	.history-list{
		display: flex;
		flex-wrap: wrap;
		.uni-tag{
			margin-top: 5px;
			margin-right: 5px;
		}
	}
}
</style>
